Photographer Eric Lafforgue ventured to North Korea six times. Thanks to digital memory cards, he was able to save photos that was forbidden to take inside the segregated state

Taking pictures in the DMZ is easy, but if you come too close to the soldiers, they stop you

Terrifying footage shows Kim Jong-un’s army carrying out a chaotic drill, sending explosives high into the sky from the port city of Wonsan.

The huge drill was confirmed by South Korea, which described the exercise as a “large-scale firing drill”.

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Kim Jong-un has regularly issued threats of world destruction in recent months

The South Korean military said it was monitoring the situation and "firmly maintaining readiness”.

A propaganda newspaper based in Pyongyang said at the time: “There is no limit to the strike power of the People's Army armed with our style of cutting-edge military equipment including various precision and miniaturised nuclear weapons and submarine-launched ballistic missiles.”

It comes after Japan, seen as a major target for Kim’s growing missile programme, held an evacuation drill.

Schoolchildren were forced to flee last weekend during preparation for a hypothetical attack by the hermit kingdom.

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Evacuation drills were held in Japan this week to prepare for a possible North Korea attack

Just under 300 residents of Abu, a coastal town in the south of Japan, took part in the doomsday drill on Sunday.

Loudspeakers blared warning messages and children rushed to the gyms in their schools, where they took shelter during the imaginary attack.

One resident later said: “I was able to stay calm and evacuated in a few minutes.”